Alan is looking forward to on Saturday. A. outB. goes outC. go outD. going out

问题补充：

Alan is looking forward to on Saturday.

A. out

B. goes out

C. go out

D. going out

答案：

A. out

B. goes out

C. go out

(答案→)D. going out

解析：look forward to意为“期盼，盼望”，其中to是介词，后边接代词、名词、动名词（即：v-ing）或相当于名词的词组，故选D。艾伦期待着星期六出门。